/Engine/Plugins/AI/MassAI/Source/MassAIBehavior/Public/MassStateTreeProcessors.h
Processor to send the activation signal to the state tree which will execute the first tick
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)() class UMassStateTreeActivationProcessor : public [UMassProcessor](API\Plugins\MassEntity\UMassProcessor)
FMassEntityQuer...
EntityQuery